Gaia DR3 2893941099963718528 is a blue straggler star in the constellation of Canis Major. The star is located in the open cluster NGC 2243, and is approximately 11,900 light years (3,650 parsecs) away. It has an apparent magnitude of 15.6. It was first discovered in August 2018 in the second data release of the Gaia Telescope.
Stellar characteristics Gaia DR3 2893941099963718528 is a blue straggler star in the open cluster NGC 2243. The star has an estimated radius of , and a predicted mass of . The radius was found using a bolometric luminosity of , and an effective temperature of . It is believed to be extremely metal-poor with a metallicity of dex. It is proposed to be million years old. The star has a spectral type of A3V. It is a fast rotating star with a rotational velocity of .
Substellar companions
In 2026, a substellar object was discovered orbiting around Gaia DR3 2893941099963718528. It is designated Gaia DR3 2893941099963718528 b and is either a planet or brown dwarf. The substellar object is in a tight, low-eccentricity compact orbit around its host star in roughly 5.6 hours. The substellar object has a mass between 20 and 70 , implying that it is likely a brown dwarf. The substellar object has a radius of 0.8 , and calculated temperature between 1,100 and .
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